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    Re: The Darn Old Cocked Hat - the sequel 1
    From: Andrés Ruiz
    Date: 2013 Mar 13, 13:54 +0100
    Hanno and Karl,

    IMHO both are right. Two sides of the same coin.
    1. One is a simulation based in a model without navigational data, 
    2. and the other is a probabilistic treatment of the navigational problem.
    Like in FEM, the model must be validate against real observed data.

    For the second way, the confidence ellipse is obtained using the covariance matrix of the system of equations.
    See: Celestial Fix - n LoPs 

    Regards,
    --
    Andrés Ruiz
    Navigational Algorithms
    http://sites.google.com/site/navigationalalgorithms/
       
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